Year Total
1800 5.81
1801 5.81
1802 5.81
1803 5.81
1804 5.81
1805 5.81
1806 5.81
1807 5.81
1808 5.81
1809 5.81
1810 5.81
1811 5.81
1812 5.81
1813 5.81
1814 5.81
1815 5.81
1816 5.81
1817 5.81
1818 5.81
1819 5.81
1820 5.81
1821 5.81
1822 5.81
1823 5.81
1824 5.81
1825 5.81
1826 5.81
1827 5.81
1828 5.81
1829 5.81
1830 5.81
1831 5.81
1832 5.81
1833 5.81
1834 5.81
1835 5.81
1836 5.81
1837 5.81
1838 5.81
1839 5.81
1840 5.81
1841 5.81
1842 5.81
1843 5.81
1844 5.81
1845 5.81
1846 5.81
1847 5.81
1848 5.81
1849 5.81
1850 5.81
1851 5.81
1852 5.81
1853 5.81
1854 5.81
1855 5.81
1856 5.81
1857 5.81
1858 5.81
1859 5.81
1860 5.81
1861 5.81
1862 5.81
1863 5.81
1864 5.81
1865 5.81
1866 5.81
1867 5.81
1868 5.81
1869 5.81
1870 5.81
1871 5.81
1872 5.81
1873 5.81
1874 5.81
1875 5.81
1876 5.81
1877 5.81
1878 5.81
1879 5.81
1880 5.81
1881 5.81
1882 5.81
1883 5.81
1884 5.81
1885 5.81
1886 5.81
1887 5.81
1888 5.81
1889 5.81
1890 5.81
1891 5.81
1892 5.81
1893 5.81
1894 5.81
1895 5.81
1896 5.81
1897 5.81
1898 5.81
1899 5.81
1900 5.81
1901 5.81
1902 5.81
1903 5.81
1904 5.81
1905 5.81
1906 5.81
1907 5.81
1908 5.81
1909 5.81
1910 5.81
1911 5.81
1912 5.81
1913 5.81
1914 5.81
1915 5.81
1916 5.81
1917 5.81
1918 5.81
1919 5.81
1920 5.81
1921 5.81
1922 5.81
1923 5.81
1924 5.81
1925 5.81
1926 5.78
1927 5.76
1928 5.73
1929 5.71
1930 5.68
1931 5.66
1932 5.63
1933 5.61
1934 5.58
1935 5.56
1936 5.53
1937 5.51
1938 5.48
1939 5.46
1940 5.43
1941 5.41
1942 5.38
1943 5.36
1944 5.33
1945 5.31
1946 5.28
1947 5.26
1948 5.23
1949 5.21
1950 5.18
1951 5.36
1952 5.69
1953 5.97
1954 6.22
1955 6.43
1956 6.59
1957 6.71
1958 6.78
1959 6.79
1960 6.74
1961 6.63
1962 6.44
1963 6.2
1964 5.91
1965 5.6
1966 5.3
1967 5.04
1968 4.84
1969 4.69
1970 4.6
1971 4.56
1972 4.54
1973 4.51
1974 4.48
1975 4.44
1976 4.39
1977 4.34
1978 4.3
1979 4.27
1980 4.25
1981 4.24
1982 4.24
1983 4.25
1984 4.24
1985 4.23
1986 4.2
1987 4.15
1988 4.07
1989 3.97
1990 3.84
1991 3.7
1992 3.55
1993 3.4
1994 3.25
1995 3.12
1996 2.99
1997 2.87
1998 2.76
1999 2.67
2000 2.58
2001 2.51
2002 2.46
2003 2.41
2004 2.37
2005 2.34
2006 2.32
2007 2.3
2008 2.28
2009 2.26
2010 2.24
2011 2.22
2012 2.19
2013 2.17
2014 2.15
2015 2.13
2016 2.1
2017 2.08
2018 2.06